const std::vector<int32_t> *shape = nullptr,
    tflite::TensorType type = tflite::TensorType_FLOAT32,
    bool has_rank = false) {
  auto shape__ = shape ? _fbb.CreateVector<int32_t>(*shape) : 0;
  return tflite::CreateVariantSubType(
      _fbb,
      shape__,
      type,
      has_rank);
}